<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 添加搜索区域 -->
      <el-row :gutter="10">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryObj.query" clearable @clear="onSearchInputClear">
            <el-button slot="append" icon="el-icon-search" @click="onSearch"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addUser">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <!-- 索引列 -->
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template v-slot="scope">
            <!-- 编辑按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRoleDialog(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryObj.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryObj.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="onAddDialogClose">
      <!-- 对话框的内容主体 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addNewUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 编辑用户的对话框 -->
    <el-dialog title="编辑用户" :visible.sync="editDialogVisible" width="50%" @close="onEditDialogClose">
      <!-- 对话框的内容主体 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 为用户分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="onSetRoleDialogClose">
      <!-- 用户信息区域 -->
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <div>
          <span>分配新角色：</span>
          <!-- 下拉选择框 -->
          <el-select v-model="selectRoleId" placeholder="请选择角色">
            <el-option v-for="item in rolelist" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </div>
      </div>
      <!-- 按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="setNewRole">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
// 自定义校验邮箱的函数
const checkEmail = (rule, val, cb) => {
  // 验证邮箱的正则表达式
  const regEmail = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/

  if (regEmail.test(val)) return cb()
  cb(new Error('请输入合法的邮箱'))
}

// 自定义校验手机号的函数
const checkMobile = (rule, val, cb) => {
  // 验证手机号的正则表达式
  const regMobile = /^(?:(?:\+|00)86)?1(?:(?:3[\d])|(?:4[5-7|9])|(?:5[0-3|5-9])|(?:6[5-7])|(?:7[0-8])|(?:8[\d])|(?:9[1|8|9]))\d{8}$/

  if (regMobile.test(val)) return cb()

  cb(new Error('请输入正确的手机号'))
}

export default {
  data() {
    return {
      // 请求的参数对象
      queryObj: {
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      // 用户列表数据
      userlist: [],
      // 总数据条数
      total: 0,
      // 控制添加对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户表单的数据对象
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加用户表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '用户名不能为空', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '密码不能为空', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码的长度在6~15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '邮箱不能为空', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '手机号不能为空', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        email: [
          { required: true, message: '邮箱不能为空', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '手机号不能为空', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 用户的信息对象
      userInfo: {},
      // 所有角色的列表
      rolelist: [],
      // 用户当前选择的角色Id
      selectRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    // 获取用户列表数据
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryObj
      })
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听 pagesize 的变化
    handleSizeChange(newSize) {
      this.queryObj.pagesize = newSize
      this.getUserList()
    },
    // 监听 pagenum 的变化
    handleCurrentChange(newPagenum) {
      this.queryObj.pagenum = newPagenum
      this.getUserList()
    },
    // 监听用户状态的改变
    async userStateChange(userinfo) {
      // console.log(userinfo)
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)

      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }

      this.$message.success('更新用户状态成功！')
    },
    // 展示添加用户的对话框
    addUser() {
      this.addDialogVisible = true
    },
    // 监听添加用户的对话框关闭的事件
    onAddDialogClose() {
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户
    addNewUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return

        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          return this.$message.error('添加用户失败！')
        }

        this.$message.success('添加用户成功！')
        // 关闭添加用户的对话框
        this.addDialogVisible = false
        // 刷新用户列表数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // 根据Id查询用户的基本信息，并赋值到 editForm 对象中
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('获取用户信息失败！')
      this.editForm = res.data

      // 展示编辑用户的对话框
      this.editDialogVisible = true
    },
    // 监听编辑用户对话框的关闭事件
    onEditDialogClose() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起请求，修改用户信息
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })

        if (res.meta.status !== 200) return this.$message.error('修改用户失败！')

        // 提示用户
        this.$message.success('修改成功！')
        // 刷新数据列表
        this.getUserList()
        // 隐藏对话框
        this.editDialogVisible = false
      })
    },
    // 用户点击了搜索按钮
    onSearch() {
      // 1. 先把页码值重置为 1
      this.queryObj.pagenum = 1
      // 2. 发起数据请求
      this.getUserList()
    },
    // 用户清空了搜索的文本输入框
    onSearchInputClear() {
      // 1. 先把页码值重置为 1
      this.queryObj.pagenum = 1
      // 2. 发起数据请求
      this.getUserList()
    },
    // 根据Id删除用户
    async removeUserById(id) {
      // 询问用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      // 取消了删除
      if (confirmResult !== 'confirm') return this.$message.info('您取消了删除！')

      // 执行删除的业务逻辑
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除用户失败！')

      this.$message.success('删除用户成功！')

      // 判断页码值是否应该 -1
      if (this.userlist.length === 1 && this.queryObj.pagenum > 1) {
        this.queryObj.pagenum--
      }

      // 刷新用户列表数据
      this.getUserList()
    },
    // 展示分配角色的对话框
    async showSetRoleDialog(userInfo) {
      this.userInfo = userInfo
      // 获取所有角色的列表数据
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败！')
      // 所有角色的数组
      this.rolelist = res.data

      // 设置默认选中项的Id
      const findResult = this.rolelist.find(item => item.roleName === userInfo.role_name)
      if (findResult) {
        this.selectRoleId = findResult.id
      }

      // 展示对话框
      this.setRoleDialogVisible = true
    },
    onSetRoleDialogClose() {
      this.selectRoleId = ''
      this.rolelist = []
    },
    async setNewRole() {
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectRoleId
      })

      if (res.meta.status !== 200) return this.$message.error('分配角色失败！')
      this.$message.success('分配角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    }
  }
}
</script>

<style>
</style>